142611-58-3Relevant articles and documents
Reactions of beryllium atoms with hydrogen. Matrix infrared spectra of novel product molecules
Tague Jr., Thomas J.,Andrews, Lester
, p. 12111 - 12116 (2007/10/02)
Beryllium atoms formed by pulsed laser ablation have been codeposited with gaseous mixtures of hydrogen diluted in argon (concentrations varied from 25:1 to 100:1) onto a substrate at 10 K. Infrared spectroscopy on the reaction mixture identified six novel product molecules - BeH, BeH2, BeBeH, HBeBeH, HBeHBeH, and HBe(H)2-BeH. Assignments of infrared absorption bands were made on the basis of broad-band photolysis and annealing behavior, isotopic substitutions, and ab initio calculations performed at the MBPT(2) level. The major products initially are BeH (1970.0 cm-1) and the previously unobserved BeH2 molecule (v3 = 2159.1 cm-1, v2 = 697.9 cm-1) with formation of the three dimers HBeBeH, HBeHBeH, and HBe(H)2BeH at the expense of the initial reaction products upon annealing of the matrix to 30 K. The former dimer involves a stable Be-Be bond, and the latter dimers incorporate bridging hydrogen atoms. The new Be2H molecule (2013.7, 540.0 cm-1) is a minor product in these experiments, which exhibits a stronger Be-Be bond than Be2.
